---
title: cartCreateDefault
description: >-
  Creates a function that accepts an object of
  [CartInput](/docs/api/storefront/2023-10/input-objects/CartInput) and returns
  a new cart
api_version: 2023-10
api_name: hydrogen
source_url:
  html: 'https://shopify.dev/docs/api/hydrogen/2023-10/utilities/cartcreatedefault'
  md: 'https://shopify.dev/docs/api/hydrogen/2023-10/utilities/cartcreatedefault.md'
---

# cart​Create​Default

Creates a function that accepts an object of [CartInput](https://shopify.dev/docs/api/storefront/2023-10/input-objects/CartInput) and returns a new cart

## cart​Create​Default([options](#cartcreatedefault-propertydetail-options)​)

### Parameters

* options

  CartQueryOptions

  required

### Returns

* CartCreateFunction

  ### CartCreateFunction

  * export type CartCreateFunction = ( input: CartInput, optionalParams?: CartOptionalInput, ) => Promise<CartQueryData>;

### CartQueryOptions

* storefront

  The storefront client instance created by \[\`createStorefrontClient\`]\(docs/api/hydrogen/latest/utilities/createstorefrontclient).

  ```ts
  Storefront
  ```

* getCartId

  A function that returns the cart ID.

  ```ts
  () => string
  ```

* cartFragment

  The cart fragment to override the one used in this query.

  ```ts
  string
  ```

```ts
{
  /**
   * The storefront client instance created by [`createStorefrontClient`](docs/api/hydrogen/latest/utilities/createstorefrontclient).
   */
  storefront: Storefront;
  /**
   * A function that returns the cart ID.
   */
  getCartId: () => string | undefined;
  /**
   * The cart fragment to override the one used in this query.
   */
  cartFragment?: string;
}
```

### Storefront

Interface to interact with the Storefront API.

* query

  The function to run a query on Storefront API.

  ```ts
  <OverrideReturnType = any, RawGqlString extends string = string>(query: RawGqlString, ...options: RawGqlString extends never ? IsOptionalVariables<StorefrontQueries[RawGqlString]> extends true ? [StorefrontQuerySecondParam<RawGqlString>?] : [StorefrontQuerySecondParam<RawGqlString>] : [StorefrontQuerySecondParam<string>?]) => Promise<RawGqlString extends never ? StorefrontQueries[RawGqlString]["return"] : OverrideReturnType>
  ```

* mutate

  The function to run a mutation on Storefront API.

  ```ts
  <OverrideReturnType = any, RawGqlString extends string = string>(mutation: RawGqlString, ...options: RawGqlString extends never ? IsOptionalVariables<StorefrontMutations[RawGqlString]> extends true ? [StorefrontMutateSecondParam<RawGqlString>?] : [StorefrontMutateSecondParam<RawGqlString>] : [StorefrontCommonOptions<{ readonly [variable: string]: unknown; }>?]) => Promise<RawGqlString extends never ? StorefrontMutations[RawGqlString]["return"] : OverrideReturnType>
  ```

* cache

  The cache instance passed in from the \`createStorefrontClient\` argument.

  ```ts
  Cache
  ```

* CacheNone

  Re-export of \[\`CacheNone\`]\(/docs/api/hydrogen/2023-10/utilities/cachenone).

  ```ts
  () => NoStoreStrategy
  ```

* CacheLong

  Re-export of \[\`CacheLong\`]\(/docs/api/hydrogen/2023-10/utilities/cachelong).

  ```ts
  (overrideOptions?: AllCacheOptions) => AllCacheOptions
  ```

* CacheShort

  Re-export of \[\`CacheShort\`]\(/docs/api/hydrogen/2023-10/utilities/cacheshort).

  ```ts
  (overrideOptions?: AllCacheOptions) => AllCacheOptions
  ```

* CacheCustom

  Re-export of \[\`CacheCustom\`]\(/docs/api/hydrogen/2023-10/utilities/cachecustom).

  ```ts
  (overrideOptions: AllCacheOptions) => AllCacheOptions
  ```

* generateCacheControlHeader

  Re-export of \[\`generateCacheControlHeader\`]\(/docs/api/hydrogen/2023-10/utilities/generatecachecontrolheader).

  ```ts
  (cacheOptions: AllCacheOptions) => string
  ```

* getPublicTokenHeaders

  Returns an object that contains headers that are needed for each query to Storefront API GraphQL endpoint. See \[\`getPublicTokenHeaders\` in Hydrogen React]\(/docs/api/hydrogen-react/2023-10/utilities/createstorefrontclient#:\~:text=%27graphql%27.-,getPublicTokenHeaders,-(props%3F%3A) for more details.

  ```ts
  (props?: Partial<Pick<StorefrontClientProps, "contentType">> & Pick<StorefrontClientProps, "publicStorefrontToken">) => Record<string, string>
  ```

* getPrivateTokenHeaders

  Returns an object that contains headers that are needed for each query to Storefront API GraphQL endpoint for API calls made from a server. See \[\`getPrivateTokenHeaders\` in Hydrogen React]\(/docs/api/hydrogen-react/2023-10/utilities/createstorefrontclient#:\~:text=storefrontApiVersion-,getPrivateTokenHeaders,-(props%3F%3A) for more details.

  ```ts
  (props?: Partial<Pick<StorefrontClientProps, "contentType">> & Pick<StorefrontClientProps, "privateStorefrontToken"> & { buyerIp?: string; }) => Record<string, string>
  ```

* getShopifyDomain

  Creates the fully-qualified URL to your myshopify.com domain. See \[\`getShopifyDomain\` in Hydrogen React]\(/docs/api/hydrogen-react/2023-10/utilities/createstorefrontclient#:\~:text=StorefrontClientReturn-,getShopifyDomain,-(props%3F%3A) for more details.

  ```ts
  (props?: Partial<Pick<StorefrontClientProps, "storeDomain">>) => string
  ```

* getApiUrl

  Creates the fully-qualified URL to your store's GraphQL endpoint. See \[\`getStorefrontApiUrl\` in Hydrogen React]\(/docs/api/hydrogen-react/2023-10/utilities/createstorefrontclient#:\~:text=storeDomain-,getStorefrontApiUrl,-(props%3F%3A) for more details.

  ```ts
  (props?: Partial<Pick<StorefrontClientProps, "storeDomain" | "storefrontApiVersion">>) => string
  ```

* isApiError

  Determines if the error is resulted from a Storefront API call.

  ```ts
  (error: any) => boolean
  ```

* i18n

  The \`i18n\` object passed in from the \`createStorefrontClient\` argument.

  ```ts
  TI18n
  ```

```ts
{
  /** The function to run a query on Storefront API. */
  query: <OverrideReturnType = any, RawGqlString extends string = string>(
    query: RawGqlString,
    ...options: RawGqlString extends keyof StorefrontQueries // Do we have any generated query types?
      ? IsOptionalVariables<StorefrontQueries[RawGqlString]> extends true
        ? [StorefrontQuerySecondParam<RawGqlString>?] // Using codegen, query has no variables
        : [StorefrontQuerySecondParam<RawGqlString>] // Using codegen, query needs variables
      : [StorefrontQuerySecondParam?] // No codegen, variables always optional
  ) => Promise<
    RawGqlString extends keyof StorefrontQueries // Do we have any generated query types?
      ? StorefrontQueries[RawGqlString]['return'] // Using codegen, return type is known
      : OverrideReturnType // No codegen, let user specify return type
  >;
  /** The function to run a mutation on Storefront API. */
  mutate: <OverrideReturnType = any, RawGqlString extends string = string>(
    mutation: RawGqlString,
    ...options: RawGqlString extends keyof StorefrontMutations // Do we have any generated mutation types?
      ? IsOptionalVariables<StorefrontMutations[RawGqlString]> extends true
        ? [StorefrontMutateSecondParam<RawGqlString>?] // Using codegen, mutation has no variables
        : [StorefrontMutateSecondParam<RawGqlString>] // Using codegen, mutation needs variables
      : [StorefrontMutateSecondParam?] // No codegen, variables always optional
  ) => Promise<
    RawGqlString extends keyof StorefrontMutations // Do we have any generated mutation types?
      ? StorefrontMutations[RawGqlString]['return'] // Using codegen, return type is known
      : OverrideReturnType // No codegen, let user specify return type
  >;
  /** The cache instance passed in from the `createStorefrontClient` argument. */
  cache?: Cache;
  /** Re-export of [`CacheNone`](/docs/api/hydrogen/2023-10/utilities/cachenone). */
  CacheNone: typeof CacheNone;
  /** Re-export of [`CacheLong`](/docs/api/hydrogen/2023-10/utilities/cachelong). */
  CacheLong: typeof CacheLong;
  /** Re-export of [`CacheShort`](/docs/api/hydrogen/2023-10/utilities/cacheshort). */
  CacheShort: typeof CacheShort;
  /** Re-export of [`CacheCustom`](/docs/api/hydrogen/2023-10/utilities/cachecustom). */
  CacheCustom: typeof CacheCustom;
  /** Re-export of [`generateCacheControlHeader`](/docs/api/hydrogen/2023-10/utilities/generatecachecontrolheader). */
  generateCacheControlHeader: typeof generateCacheControlHeader;
  /** Returns an object that contains headers that are needed for each query to Storefront API GraphQL endpoint. See [`getPublicTokenHeaders` in Hydrogen React](/docs/api/hydrogen-react/2023-10/utilities/createstorefrontclient#:~:text=%27graphql%27.-,getPublicTokenHeaders,-(props%3F%3A) for more details. */
  getPublicTokenHeaders: ReturnType<
    typeof createStorefrontUtilities
  >['getPublicTokenHeaders'];
  /** Returns an object that contains headers that are needed for each query to Storefront API GraphQL endpoint for API calls made from a server. See [`getPrivateTokenHeaders` in  Hydrogen React](/docs/api/hydrogen-react/2023-10/utilities/createstorefrontclient#:~:text=storefrontApiVersion-,getPrivateTokenHeaders,-(props%3F%3A) for more details.*/
  getPrivateTokenHeaders: ReturnType<
    typeof createStorefrontUtilities
  >['getPrivateTokenHeaders'];
  /** Creates the fully-qualified URL to your myshopify.com domain. See [`getShopifyDomain` in  Hydrogen React](/docs/api/hydrogen-react/2023-10/utilities/createstorefrontclient#:~:text=StorefrontClientReturn-,getShopifyDomain,-(props%3F%3A) for more details. */
  getShopifyDomain: ReturnType<
    typeof createStorefrontUtilities
  >['getShopifyDomain'];
  /** Creates the fully-qualified URL to your store's GraphQL endpoint. See [`getStorefrontApiUrl` in  Hydrogen React](/docs/api/hydrogen-react/2023-10/utilities/createstorefrontclient#:~:text=storeDomain-,getStorefrontApiUrl,-(props%3F%3A) for more details.*/
  getApiUrl: ReturnType<
    typeof createStorefrontUtilities
  >['getStorefrontApiUrl'];
  /** Determines if the error is resulted from a Storefront API call. */
  isApiError: (error: any) => boolean;
  /** The `i18n` object passed in from the `createStorefrontClient` argument. */
  i18n: TI18n;
}
```

### IsOptionalVariables

```ts
Omit<
  OperationTypeValue['variables'],
  AutoAddedVariableNames
> extends EmptyVariables
  ? true // No need to pass variables
  : GenericVariables extends OperationTypeValue['variables']
  ? true // We don't know what variables are needed
  : false
```

### AutoAddedVariableNames

```ts
'country' | 'language'
```

### EmptyVariables



```ts
{[key: string]: never}
```

### GenericVariables

```ts
ExecutionArgs['variableValues']
```

### StorefrontQueries

Maps all the queries found in the project to variables and return types.



```ts
export interface StorefrontQueries {
  // Example of how a generated query type looks like:
  // '#graphql query q1 {...}': {return: Q1Query; variables: Q1QueryVariables};
}
```

### StorefrontQuerySecondParam

```ts
(RawGqlString extends keyof StorefrontQueries
  ? StorefrontCommonOptions<StorefrontQueries[RawGqlString]['variables']>
  : StorefrontCommonOptions<GenericVariables>) & {cache?: CachingStrategy}
```

### StorefrontCommonOptions

```ts
{
  headers?: HeadersInit;
  storefrontApiVersion?: string;
} & (IsOptionalVariables<{variables: Variables}> extends true
  ? {variables?: Variables}
  : {variables: Variables})
```

### CachingStrategy

Use the \`CachingStrategy\` to define a custom caching mechanism for your data. Or use one of the pre-defined caching strategies: CacheNone, CacheShort, CacheLong.

* mode

  The caching mode, generally \`public\`, \`private\`, or \`no-store\`.

  ```ts
  string
  ```

* maxAge

  The maximum amount of time in seconds that a resource will be considered fresh. See \`max-age\` in the \[MDN docs]\(https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control#:\~:text=Response%20Directives-,max%2Dage,-The%20max%2Dage).

  ```ts
  number
  ```

* staleWhileRevalidate

  Indicate that the cache should serve the stale response in the background while revalidating the cache. See \`stale-while-revalidate\` in the \[MDN docs]\(https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control#stale-while-revalidate).

  ```ts
  number
  ```

* sMaxAge

  Similar to \`maxAge\` but specific to shared caches. See \`s-maxage\` in the \[MDN docs]\(https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control#s-maxage).

  ```ts
  number
  ```

* staleIfError

  Indicate that the cache should serve the stale response if an error occurs while revalidating the cache. See \`stale-if-error\` in the \[MDN docs]\(https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control#stale-if-error).

  ```ts
  number
  ```

```ts
AllCacheOptions
```

### StorefrontMutations

Maps all the mutations found in the project to variables and return types.



```ts
export interface StorefrontMutations {
  // Example of how a generated mutation type looks like:
  // '#graphql mutation m1 {...}': {return: M1Mutation; variables: M1MutationVariables};
}
```

### StorefrontMutateSecondParam

```ts
RawGqlString extends keyof StorefrontMutations
  ? StorefrontCommonOptions<StorefrontMutations[RawGqlString]['variables']>
  : StorefrontCommonOptions<GenericVariables>
```

### NoStoreStrategy

* mode

  ```ts
  string
  ```

```ts
{
  mode: string;
}
```

### AllCacheOptions

Override options for a cache strategy.

* mode

  The caching mode, generally \`public\`, \`private\`, or \`no-store\`.

  ```ts
  string
  ```

* maxAge

  The maximum amount of time in seconds that a resource will be considered fresh. See \`max-age\` in the \[MDN docs]\(https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control#:\~:text=Response%20Directives-,max%2Dage,-The%20max%2Dage).

  ```ts
  number
  ```

* staleWhileRevalidate

  Indicate that the cache should serve the stale response in the background while revalidating the cache. See \`stale-while-revalidate\` in the \[MDN docs]\(https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control#stale-while-revalidate).

  ```ts
  number
  ```

* sMaxAge

  Similar to \`maxAge\` but specific to shared caches. See \`s-maxage\` in the \[MDN docs]\(https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control#s-maxage).

  ```ts
  number
  ```

* staleIfError

  Indicate that the cache should serve the stale response if an error occurs while revalidating the cache. See \`stale-if-error\` in the \[MDN docs]\(https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control#stale-if-error).

  ```ts
  number
  ```

```ts
export interface AllCacheOptions {
  /**
   * The caching mode, generally `public`, `private`, or `no-store`.
   */
  mode?: string;
  /**
   * The maximum amount of time in seconds that a resource will be considered fresh. See `max-age` in the [MDN docs](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control#:~:text=Response%20Directives-,max%2Dage,-The%20max%2Dage).
   */
  maxAge?: number;
  /**
   * Indicate that the cache should serve the stale response in the background while revalidating the cache. See `stale-while-revalidate` in the [MDN docs](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control#stale-while-revalidate).
   */
  staleWhileRevalidate?: number;
  /**
   * Similar to `maxAge` but specific to shared caches. See `s-maxage` in the [MDN docs](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control#s-maxage).
   */
  sMaxAge?: number;
  /**
   * Indicate that the cache should serve the stale response if an error occurs while revalidating the cache. See `stale-if-error` in the [MDN docs](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Cache-Control#stale-if-error).
   */
  staleIfError?: number;
}
```

### CartCreateFunction

* input

  ```ts
  CartInput
  ```

* optionalParams

  ```ts
  CartOptionalInput
  ```

Promise\<CartQueryData>

```ts
Promise<CartQueryData>
```

```ts
export type CartCreateFunction = (
  input: CartInput,
  optionalParams?: CartOptionalInput,
) => Promise<CartQueryData>;
```

### CartInput



```ts
CartInput
```

### CartOptionalInput

* cartId

  The cart id.

  ```ts
  string
  ```

* country

  The country code.

  ```ts
  CountryCode
  ```

* language

  The language code.

  ```ts
  LanguageCode
  ```

```ts
{
  /**
   * The cart id.
   * @default cart.getCartId();
   */
  cartId?: Scalars['ID']['input'];
  /**
   * The country code.
   * @default storefront.i18n.country
   */
  country?: CountryCode;
  /**
   * The language code.
   * @default storefront.i18n.language
   */
  language?: LanguageCode;
}
```

### CartQueryData

* cart

  ```ts
  Cart
  ```

* errors

  ```ts
  CartUserError[] | MetafieldsSetUserError[] | MetafieldDeleteUserError[]
  ```

```ts
{
  cart: Cart;
  errors?:
    | CartUserError[]
    | MetafieldsSetUserError[]
    | MetafieldDeleteUserError[];
}
```

### Cart



```ts
Cart
```

### CartUserError



```ts
CartUserError
```

### MetafieldsSetUserError



```ts
MetafieldsSetUserError
```

### MetafieldDeleteUserError



```ts
MetafieldDeleteUserError
```

### Examples

* #### example

  ##### Description

  This is the default example

  ##### JavaScript

  ```js
  import {cartCreateDefault} from '@shopify/hydrogen';

  const cartCreate = cartCreateDefault({
    storefront,
    getCartId,
  });

  const result = await cartCreate({
    lines: [
      {
        merchandiseId: 'gid://shopify/ProductVariant/123456789',
        quantity: 1,
      },
    ],
  });
  ```